| http://www.w3.org/ns/prov#value | - The gases leaving the reflux condenser were bubbled through an aqueous KOH solution in order to retain and neutralize the volatile acid products formed during the reaction, and were then dried and condensed in a trap at such a temperature as to make it possible to retain unreacted tetrafluoroethylene and the epoxide thereof (formed during the reaction), eliminating the excess oxygen.
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